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M. GRO NIN, COUPLER FOR BOB SLBDS.

No. 377,739. Patented Feb. 14,1883}.

WITNESSES:

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N. PETERS. Phulu-Lithogmphlr. Washington. In:

UNITED STATES PATENT OFFICE.

MATTHEW ORONIN, OF WESTMORELAND, YORK.

COUPLER F'OR BOB-SLEDS.

SPECIFICATION forming part of Letters Patent No. 377,739, dated February 14, 1888.

Application filed February 19, 1887. Serial No. 228,165. (No model.)

To all whom, it may concern.-

Be it known that I, MATTHEW CRONIN, of WVestmoreland, in the county of Oneida and State of New York, haveinvented certain new and useful Improvements in Jointed Couplers for Bob-Sleighs; audI do hereby declare that the following is afull, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification.

My invention relates to an improvement in the means for supporting a bolster on the hind bob of a sleigh; and it consists in the mechanism hereinafter pointed out and claimed.

In the accompanying drawings, Figure 1 represents a perspective view of the hind bob in a sleigh. Fig. 2 is a side view of myjointed coupling. Fig. 3 is a front view of the same;

and Fig. 4 is a side view on line it m, Fig. 3.

Heretofore various devices have been used to accommodate the movement of the hind bob where a reach is used and connects the hind bob to the front. When no provision is made for accommodating the inequality of distance between the front and hind bob, caused by their .up-and-down movement in passing over uneven surfaces, the strain upon the bolster is very great, tending to move it backward or forward under the box or tip it over. To relieve this trouble I provide a sys tern of double-jointed couplings, which allows the free horizontal movement of the hind bob, caused by passing over uneven surfaces without strain upon the bolster. When the hind bob is drawn over an even surface, the load rests on the flat surface of the sockets and conmeeting-link.

In the drawings, figure 1 represents a bob of ordinary construction. 2 represents the reach, connected with the hind bob. 3 3 represent the beam,mounted on knees 44 on either runher.

5 5, crosswise of the beams. On these bolster- On the beams I mount bolster-beams beams I mount socket-plates 6, which are rigidly held thereto by bolts or rivets. the socket-plates I use links 7 7, the lower end being constructed to fit in socket-plate, the lower end of the link being perforated'at 8 for receiving retaining-bolt 9, which. forms a jointed coupling at this point, which leaves the upper end of the link free to move. On

With

the upper end of link7, I provide perforated cars 10 10.- The perforations are preferably made oblong in vertical shape, to allow the upper socket-plate to be more readily lifted off its seat, which fits into socket-plate 11 11,

having perforated cars 12 12, the link and socket-plate being connected at this point with bolt 13. The rear of this socket-plate when in its normal condition rests on shoul-:-

der 15 on the upper end of the link, forming a rest for carrying the load. On the upper surface of the upper socket plate I mount bolster 16, which is held thereto by bolts 17 17. To this bolster the box or bottom of the thereby producedis accommodated by .the

jointed coupling constructed substantially as sleigh-box is attached. As the hind bob rises I 'and falls upon the uneven surface of the highway, the forward or backward movementmove to accommodate the unequal distance traveled by the two bobs.

What I'claim as new, and desire to secure by Letters Patent, is- 1. The combination, in bobs, of' the upper plate secured to the bolster, the lower socketplate secured to the bobs, and the coupling-link jointed at the front and in the rear to the upper and lower socket-plates, substantially as set forth, for the purposes stated.

2. The combination, in bobs, of the upper and lower socket plates joined to the opposite ends of the connecting-link, the upper end of the link being provided with a shoulder-forming arest when the bobs are moving on even or smooth surfaces, substantially as set forth.

In witness whereof I have aflixed my signature in presence of two witnesses.

MATTHEW ononm.

Witnesses:

EDWIN H. RIs EY, D. McGUoKEN.

jun/- 

